A Coming War!
The establishment of relations between two worlds was going at an accelerated pace as individuals from the Beast World and Noah's homeworld worked in conjunction to increase their knowledge and power.
There was a smooth transition as the governments and ruling parties of the two worlds put aside their differences to work together for a greater goal. Of course, it was not all smooth sailing and there were still a few hiccups here and there, but the majority of things remained in a positive direction.
It was much easier to keep people in line when you had a few specific people much more powerful than them to use force if needed. Power was the only thing that was respected at this moment in time, as it was what was required in order for everyone to continue living in peace.